Historically, one of the biggest advantages of HD DVD over Blu-ray has been the much lower cost of HD DVD players. On the other hand, most HD DVD players can't deliver a 1080p signal, which many consider the Holy Grail of high-def. Toshiba's new HD-A20 continues the tradition of low cost ($500) while providing 1080p output. Is it the best of both worlds? (Technical Notes)